test-query-car.js

import { MyChaincode } from '../<path_to_your_chaincode_class>';
import { ChaincodeMockStub, Transform } from "@theledger/fabric-mock-stub";
// You always need your chaincode so it knows which chaincode to invoke on
const chaincode = new MyChaincode();
describe('Test MyChaincode', () => {
    it("Should query car", async () => {
        const mockStub = new ChaincodeMockStub("MyMockStub", chaincode);
        
        const response = await mockStub.mockInvoke("tx2", ['queryCar', `CAR0`]);
        expect(Transform.bufferToObject(response.payload)).to.deep.eq({
            'make': 'prop1',
            'model': 'prop2',
            'color': 'prop3',
            'owner': 'owner',
            'docType': 'car'
        });
    });
});